PHOENIX -- While his Colorado Rockies teammates were dressing for Tuesday night's game against Arizona, pitcher Mike DeJean was changing back into street clothes. With a shoulder that wouldn't let him pitch, he wanted to get out of the way and get a flight back to Denver to determine what was wrong.

DeJean began feeling soreness late in Spring Training, and he felt it flare while throwing a pitch during Friday night's game at San Diego. He saw Dr. Jan Fronek, the Padres' team physician, who said it was tendinitis during a preliminary examination. After not throwing on Saturday and Sunday and having Monday off, DeJean attempted to play catch at Chase Field.

The session went poorly. The Rockies scheduled an MRI exam with their medical director, Dr. Thomas Noonan, on Wednesday, and placed DeJean on the 15-day disabled list.

After Tuesday's game, manager Clint Hurdle said the Rockies will call up right-hander Ramon Ramirez, who came from the New York Yankees in the deal that sent righty Shawn Chacon to the Bronx on July 28. Ramirez has thrown one scoreless inning with one strikeout for Triple-A Colorado Springs.

Riding the hot hand ... and riding the bench: Second baseman Luis Gonzalez has not started since suffering inflammation his right wrist during the season's second game. He was healthy enough to make a pinch-hit at-bat on Sunday, but he still wasn't in the lineup on Tuesday.

Of course, replacement Jason Smith is batting .563 with three home runs and seven RBIs. The homers all came during his starts in Gonzalez's place.

"We're going to ride it," said Hurdle said. "I'm not smart enough to take him out."

Hurdle said he discussed the issue with Gonzalez before the game. Gonzalez said his health is beyond question.

"I feel good, feel great," Gonzalez said. "I'm ready for anything."

Hurdle also didn't start shortstop Clint Barmes, who entered the night with a .258 batting average and on-base percentage. A side benefit for Barmes was he didn't have to face Arizona starter Orlando "El Duque" Hernandez, who dominated Rockies righty batters last week at Coors Field. Miguel Ojeda made his second start at catcher in place of Danny Ardoin.

"We have very good depth," Hurdle said. "We don't boast about it. We're just happy to have it. We're happy to have the depth we have. I've got Gonzo on the bench with Barmes -- two starters. It speaks for itself, the depth we have."

Surprise, surprise: Third baseman Garrett Atkins is building a career on producing runs, even if he doesn't compile big home run totals. But he was surprised that his work last week was noticed.

Atkins was named the National League Player of the Week after posting a league-leading 20 bases in six games. He had just one homer, but six extra-base hits.

"Usually, when I see guys win NL Player of the Week, they're hitting .500 with, like, five home runs," said Atkins, who batted .462, drove in seven runs and had a .769 slugging percentage. "I just hit one home run. I guess I had a lot of doubles, but I was surprised anyway."

Piedra moving forward: Outfielder Jorge Piedra rejoined the team to continue his comeback from a bone spur in his left heel. Piedra said he has been sprinting and taking fly balls at the club's training facility in Tucson, Ariz., for several days. He'll be with the club while it is in Arizona, then return to Tucson to play in extended Spring Training games before joining Triple-A Colorado Springs for his injury rehab assignment.

The injury is a recurring condition that worsened during Spring Training.

"Stay on top of it, obviously ... and that is to make sure I stay on the same treatments, even if it's not hurting me," said Piedra, who led all Major League pinch-hitters in batting average (.455) last season. "I wear a night sling that keeps my foot in position, and other things that I've been staying on top of. I'm still going to feel it, but I'm going to be able to tolerate it.

"It feels better than it did before I got hurt. Before, it was just this lingering pain, then it kind of snapped, and I got a little tear in there."

On the farm: Right-hander Jose Acevedo is on the Triple-A Colorado Springs disabled list with an abdominal strain. Acevedo suffered the injury during his first start, when he gave up three runs and four hits in 3 1/3 innings of a 10-2 loss at Tacoma on Friday night.

"Those type of injuries always seem to last longer than you would think," assistant general manager Bill Geivett said. "We're just proceeding very cautiously right now."

Colorado also signed a pair of infielders who are former high draft picks -- Derek Wathan (Florida, second round, 1998) and Tommy Whiteman (Houston, sixth round, 2000). Wathan is son of former Major Leaguer and current Kansas City Royals roving instructor John Wathan. Whiteman, an Edmond, Okla., native, is the first pro athlete from the Native American Crow Nation.

Up next: Colorado left-hander Jeff Francis, the only Rockies starter not to post a quality start (six or more innings, three or fewer earned runs) the first time through the rotation, will meet Arizona right-hander Miguel Batista on Wednesday night at 7:40 p.m. MT.